Underground telegraph



(No Model.)

L. HAAS.

UNDERGROUND TELEGRAPH. No; 268,661. I Patented Deo 5.1882.

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N. PETERs. Pholo-Lilbo nphor. Wuflnflom no,

UNITED STATES LEVI HAAS, OF CHESTER, PENNSYLVANIA.

UNDERGROUND TELEGRAPH.

SPECIFICATION forming part of Letters Patent No. 268,661, dated December5, 1882,

Application filed July 3, 1882.

To all whom it may concern:

Be it known that I, LEVI HAAs,a citizen of the United States of America,residing at Chester, in the county of Delaware and State ofPennsylvania, have invented certain new and useful Improvements inUnderground Telegraphs, of which the following is a specification,reference being had to the accompanying drawings.

This invention relates to improvements in underground telegraphing; andit consists in the employment of sections of pipe with longitudinalopenings or slots therein, and fitted with plugs or lids; secondly, inmeans for stretching or tightening the wires.

In the accompanying drawings, Figure 1 shows a sectional view ofsections of pipe arranged at a point where the wires branch ofi' indifferent directions embodying my invention. Fig. 2 is a view of thecurved portion of the pipe. Fig. 3'is a view of the pipe disconnected,showing the wires in position. Fig. 4 is a plan view of the disk B.

In carrying out my invention, I employ sections of pipe A A, havinglongitudinal openings or slots to in them to permit the ready insertionof the Wires which said pipe-sections are designed to hold. After thewires are inserted and the filling poured in plugs or lids are placedover the openings or slots to prevent the ingress of moisture or earth,and to retain the filling-matter in place. These pipesections are filledwith an insulating material composed of the ingredients hereinafterdescribed, in connection with the insulator disks or plugs for thewires. B B are glass plugs or disks for supporting the wires of thelines intact with the pipe-sections. These plugs or disks are providedwith angular slots or slits b to receive and permit the wires to be heldby the disks or plugs, and are formed larger or smaller in diameter, asrequired, to fill their place in the pipe-11. 6., the large disk fitsover the small end of the pipe, while the smaller disk fits inside thesame. Through disk B, to

and through disk B, extends a screw-bolt, O, with nuts or burrs to drawthe disk B toward the disk B for the purpose of tightening the wires.These disks or plugs are made of glass,

(N0 model.)

and are molded or cast; or they may be made of terracotta clay burnedand well glazed, glass, however, being preferable. Said disks areinserted through the slotin the pipe, then turned to a positioncrosswise of the pipe, each disk presenting an angular slot or slit inline with the slot in the pipe, through which a single wire is pressedinto the angular slot or slit in the disks. The disks are then rotatgduntil the next slot or slit is presented, when another wire is insertedin the same way, and so on until the whole number of wires are insertedin place. Then the ground insulating material is poured in, filling thepipe. Ge-

ment of the usual kind, crushed or ground soapstone, or clean and sharpwhite sand, or ground stone-dell, or the glassy slag of blastfurnacesmay be used for theinsnlating material to fill in the pipe-sections.Said material is ground fine and poured into the pipe through thelongitudinal slot. A complete insulator is thus provided throughout theline or lines. The insulator-disks B are arranged suitable distances orintervals apart and from the end plugs, B. Those adjacent to the enddisks or plugs, B, have the wires looped or knotted at the points wheresaid wires pass through them,and are adjusted with relation to the plugsB by screw-bolts 0, having nuts and washers to effect the stretching ortightening of the wires. The plugs B are placed against the shoulder onthe inside of the ei'ilarged end of the pipe A, and the small end of theopposite section of pipe A is forced against the plug B, thereby holdingthe same in place. This arrangement permits the turning of the plugs ordisks.

I claim-and desire to secure by Letters Patent- 1. In combination with aconduit formed of slotted pipe-sections, each of said sections beingprovided with a bell-mouth at one end, of disks B, fitted to the innercircumference of the smaller end of the pipe, and the disks B,constructed, as described, to fit over the end, and bolt (J connectingthe said disks, as shown and described.

2. In combination, the slotted pipe-sections, provided with thestationary disk B and mov able disk 13, pierced with angular siots or Intestimony WhereoEI aifix my signaturein slits to receive the Wires, saidwires being presence of two Witnesses.

looped or knotted at their ends, which rest against the face of thedisk, as described, the LEVI HAAS. screw-threaded bolts passing throughthe center of said disks, and provided with nuts to Witnesses:

draw the disks toward each other to tighten I STEPHEN E. HAAS,

the wires, as shown and described. PERRY M. WASHABAUGH'.

